Added Wasmer Js API

.github/workflows/js.yaml

@@ -0,0 +1,31 @@
+on:
+  push:
+    branches:
+      - 'master'
+      - 'staging'
+      - 'trying'
+    tags:
+      # this is _not_ a regex, see: https://docs.github.com/en/actions/reference/workflow-syntax-for-github-actions#filter-pattern-cheat-sheet
+      - '[0-9]+.[0-9]+.[0-9]+*'
+
+name: wasmer-js tests
+
+env:
+  RUST_BACKTRACE: 1
+
+jobs:
+  wasmer-js:
+    name: wasmer-js
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - name: Install Rust
+        uses: actions-rs/toolchain@v1
+        with:
+          profile: minimal
+          override: true
+      - name: Install wasm-pack
+        run: |
+          curl https://rustwasm.github.io/wasm-pack/installer/init.sh -sSf | sh
+      - name: Test wasmer-js
+        run: make test-js

Makefile

@@ -500,6 +500,10 @@ test-packages:
 	cargo test --manifest-path lib/compiler-singlepass/Cargo.toml --release --no-default-features --features=std
 	cargo test --manifest-path lib/cli/Cargo.toml $(compiler_features) --release
 
+test-js:
+	cd lib/api && wasm-pack test --node -- --no-default-features --features js-default,wat
+
+
 #####
 #
 # Testing compilers.

lib/README.md

@@ -7,6 +7,8 @@ composed of a set of crates. We can group them as follows:
   programatically through the `wasmer` crate,
 * `c-api` — The public C API exposes everything a C user needs to use
   Wasmer programatically,
+* `js-api` — The public JavaScript API exposes everything a user needs to run Wasmer
+  in a client like a browser or on a server like NodeJS or Deno,
 * `cache` — The traits and types to cache compiled WebAssembly
   modules,
 * `cli` — The Wasmer CLI itself,